package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.StatusConstant;
import com.sky.dto.DishDTO;
import com.sky.dto.DishPageQueryDTO;
import com.sky.entity.Dish;
import com.sky.entity.DishFlavor;
import com.sky.entity.Setmeal;
import com.sky.entity.SetmealDish;
import com.sky.exception.DeletionNotAllowedException;
import com.sky.mapper.DishFlavorMapper;
import com.sky.mapper.DishMapper;
import com.sky.mapper.SetmealDishMapper;
import com.sky.mapper.SetmealMapper;
import com.sky.result.PageResult;
import com.sky.service.DishService;
import com.sky.vo.DishVO;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.ArrayList;
import java.util.List;

/**
 * 目标：
 *
 * @author Ashely
 * @date 2024/6/11 11:59
 */
@Service
public class DishServiceImpl implements DishService {
    @Autowired
    private DishMapper dishMapper;
    @Autowired
    private DishFlavorMapper dishFlavorMapper;
    @Autowired
    private SetmealDishMapper setmealDishMapper;
    @Autowired
    private SetmealMapper setmealMapper;
    @Override
    @Transactional
    public void add(DishDTO dishDTO) {
        Dish dish = new Dish();
        BeanUtils.copyProperties(dishDTO,dish);
        dishMapper.addDish(dish);
        Long id = dish.getId();
        List<DishFlavor> flavors = dishDTO.getFlavors();
        if (flavors!=null && flavors.size()>0){
            flavors.forEach(dishFlavor -> dishFlavor.setDishId(id));
            dishFlavorMapper.addFlavor(flavors);
        }


    }

    @Override
    public PageResult page(DishPageQueryDTO dishPageQueryDTO) {
        PageHelper.startPage(dishPageQueryDTO.getPage(),dishPageQueryDTO.getPageSize());
      Page<DishVO> p = dishMapper.page(dishPageQueryDTO);
      return new PageResult(p.getTotal(),p.getResult());
    }

    @Override
    @Transactional
    public void delete(List<Long> ids) {
        for (Long id : ids) {
           Dish dish = dishMapper.getById(id);
           if (dish.getStatus()== StatusConstant.ENABLE){
               throw new DeletionNotAllowedException(MessageConstant.DISH_ON_SALE);
           }
        }
      List<Long> list = setmealDishMapper.getSetmealIdsByDishIds(ids);
        if (list!=null && list.size()>0){
            throw new DeletionNotAllowedException(MessageConstant.DISH_BE_RELATED_BY_SETMEAL);
        }
        for (Long id : ids) {
            dishMapper.delete(id);
            dishFlavorMapper.delete(id);
        }

        ;

    }

    @Override
    public DishVO selectById(Long id) {
        Dish dish = dishMapper.getById(id);
        List<DishFlavor>  flavors =  dishFlavorMapper.getByDishId(id);
        DishVO dishVO = new DishVO();
        BeanUtils.copyProperties(dish,dishVO);
        dishVO.setFlavors(flavors);
        return dishVO;
    }

    @Override
    @Transactional
    public void update(DishDTO dishDTO) {
        Dish dish = new Dish();
        BeanUtils.copyProperties(dishDTO,dish);
        dishMapper.update(dish);
        dishFlavorMapper.delete(dishDTO.getId());
        Long id = dish.getId();
        List<DishFlavor> flavors = dishDTO.getFlavors();
        if (flavors!=null && flavors.size()>0){
            flavors.forEach(dishFlavor -> dishFlavor.setDishId(id));
            dishFlavorMapper.addFlavor(flavors);
        }

    }

    @Override
    @Transactional
    public void startOrStop(Integer status, Long id) {
        Dish dish = Dish.builder().id(id).status(status).build();
        dishMapper.update(dish);
        if (dish.getStatus()==StatusConstant.DISABLE){
            List<SetmealDish> setmealDishes = setmealDishMapper.selectDishId(id);
            if(setmealDishes!=null && setmealDishes.size()>0){
            for (SetmealDish setmealDish : setmealDishes) {
                Long setmealId = setmealDish.getSetmealId();
                    Setmeal setmeal = Setmeal.builder().status(StatusConstant.DISABLE).id(setmealId).build();
                    setmealMapper.update(setmeal);
                }
            }
        }



        

    }

    @Override
    public List<Dish> list(Long categoryId) {
        Dish dish = Dish.builder().categoryId(categoryId).status(StatusConstant.ENABLE).build();
        List<Dish> dishs = dishMapper.list(dish);
       return dishs;
    }

    @Override
    public List<DishVO> dishWithFlavors(Dish dish) {
        List<Dish> dishList = dishMapper.list(dish);
        List<DishVO> dishVOList = new ArrayList<>();
        for (Dish dish1 : dishList) {
            DishVO dishVO = new DishVO();
            BeanUtils.copyProperties(dish1,dishVO);
            List<DishFlavor> flavorsByDishId = dishFlavorMapper.getByDishId(dish1.getId());
            dishVO.setFlavors(flavorsByDishId);
            dishVOList.add(dishVO);
        }
        return dishVOList;
    }


}
